MMM V2 out of the box

[jhautz]

Originally Posted by lincpimp

Hey Jeff, does the integy fan fit inside the case? Or did you attach it to the top? Any chance of a pic or two...

Got any ideas why the fans die? Is it a case clearance issues?

Yes the integy fan fits right where the stock fan fits. I'll see if I can get some pictures for you tonight when I get home.

It looks like the blades catch the grill of the fan and the motors burn out to me. Once I removed the top fan grill all together on my V1 MMMs I havent had a single fan fail... not one. I've got 3 of them running.

[brushlessboy16]

Originally Posted by jhautz

which issue?

I have already popped the case. The only thing I can see different inside is the padding added under the board that apparently is supposed to stop the white fan plug from breaking off of the board. The pad doesnt work. The plugs still break off.

The fans still catch on the case and fry in no time. Now they just wait untill the esc reaches 150 degrees to do it.

The slot in the case where the Rx and switch wires is still too tight and will wear away the insulation. This should be opened up a little and some extrax electrical tape or shrink tube installed.
The only thing that appears to be fixed is the BEC failures. However... That was the big one. The rest of the problems can be fixxed with a dremel.

someone needs to make a How-To for MMM durability mods, full pics and instructions.... id vote it to be a sticky too

[tc3_racer_001]

and a how to mod it within warranty. :)

[lincpimp]

Originally Posted by jhautz

30mm fans are what fit int eh case of the MMM. Fan thickness cant be more tha 7mm.

Is this the fan you are using? : http://www3.towerhobbies.com/cgi-bin...?&I=LXTYA2&P=7

[jnev]

jhautz - What kind of plug does that fan come with? Does it come with one to plug right into the battery slot in the receiver?

[jhautz]

Originally Posted by lincpimp

Is this the fan you are using? : http://www3.towerhobbies.com/cgi-bin...?&I=LXTYA2&P=7

Originally Posted by jnev

jhautz - What kind of plug does that fan come with? Does it come with one to plug right into the battery slot in the receiver?

http://www3.towerhobbies.com/cgi-bin...?&I=LXNPH1&P=7

This one. It comes with a JST style plug, but I just use a short servo extender cable and the plug on the extender cable flexes just enought when I push the JST into it that is works without having to bother with changing the JST plug on the fan.

Extender like this.
http://www3.towerhobbies.com/cgi-bin...&I=LXL287&P=ML

Looks like this with the jst fan plug in the extender cable plug.



This is what it looks like when I cut the top fan grill out and with the Integy fan installed. Earlier in the thread I posted a picture of the mod on the inside of the case to keep the white fan plug from being broken off the bottom of the circut board. The mod for the wire clearance is easy. Just take a hobby knife and shave a little off the case to make the wire slot a little bigger and then wrap the wires with electricle tape right where they would be touching the case.

[jnev]

Just to make sure, so the fan plug will go right into the extension and the extension will plug right into the receiver?

Thanks for the help.

[blueb8llz]

thanks for the pics. so since your using the integy fan, it stays on constantly correct?
another mod would be to place panty hose over your mmm or just over the top grill and maybe the side openings so no debris or grass will touch the fan blade. ive had several occasions where there was some grass in my chassis and even on the grill. it almost snuck inside.
do they make an extension for airtronics recievers?

[jhautz]

Originally Posted by jnev

Just to make sure, so the fan plug will go right into the extension and the extension will plug right into the receiver?

Thanks for the help.

Yes. Fan plug into extension, extension into reciever.

Originally Posted by blueb8llz

thanks for the pics. so since your using the integy fan, it stays on constantly correct?
another mod would be to place panty hose over your mmm or just over the top grill and maybe the side openings so no debris or grass will touch the fan blade. ive had several occasions where there was some grass in my chassis and even on the grill. it almost snuck inside.
do they make an extension for airtronics recievers?

The fan goes on as soon as the reciever gets power and stays on all of the time. I'm sure they do make airtronics extenders. I think the airtronics will plug into the Futaba or JR extenders. One of them just has a little platic rib on the side to prevent plugging it in the wrong way, but I think Airtronics just plug into any of them cuz it doent have any ribs to line up.

Originally Posted by jhautz

Yes. Fan plug into extension, extension into reciever.



The fan goes on as soon as the reciever gets power and stays on all of the time. I'm sure they do make airtronics extenders. I think the airtronics will plug into the Futaba or JR extenders. One of them just has a little platic rib on the side to prevent plugging it in the wrong way, but I think Airtronics just plug into any of them cuz it doent have any ribs to line up.

I know JR , Hitec and i think Airtronics use the same servo extension leads , don't know about Futaba though.

[phatmonk]

So far so good ran today for 20 minutes and the fan came on when it needed to.This fan looks like it might be what you guys need.You can choose a connector. buyextras.com is the website.They have 12V also

Sunon 30 x 30 x 6mm DC 5V Magnetic Levitation Fan

This Sunon fan actually use magnetic levitation to "float" the spinning fan blade in a magnetic field to dramatically reduce friction, wear, and heat; making these fans run cooler, quieter and last longer than conventional fans. Ideal for use in any mission critical application, in applications where minimal fan noise is desired.

For Notebook Replacement Fans
Specifications:
-Size: 30(Width) x 30(Length)mm
-Thickness: 6mm
-Voltage: DC 5V
-Current: 0.16 Amps
-Input Power: 0.7 Watts
-Fan Speed: 9500 RPM
-Air Flow: 4.9 CFM
-Noise Level: <28 dB(A)
-Connector: Bare Two Wire
-Fan screws are not included